Title:
SYNDIOTACTIC POLYPROPYLENE MOLDING AND METHOD OF PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/1990/012057
Kind Code:
A1
Abstract:
A highly rigid, impact-resistant molding, for which the melting point assignable to a syndiotactic polypropylene as measured by differential scanning thermal analysis at a temperature rise rate of 10°C/min gives a single peak, is produced by melt molding a substantially syndiotactic homopolymer of propylene, a substantially syndiotactic copolymer thereof with a small amount of another olefin, or a mixture thereof with a small amount of a substantially isotactic polypropylene, followed by heat treatment.
Inventors:
ASANUMA TADASHI (JP)
SHIOMURA TETSUNOSUKE (JP)
UCHIKAWA NOBUTAKA (JP)
SASAKI TATEYO (JP)
INOUE TAKEO (JP)
SHIOMURA TETSUNOSUKE (JP)
UCHIKAWA NOBUTAKA (JP)
SASAKI TATEYO (JP)
INOUE TAKEO (JP)
Application Number:
PCT/JP1990/000482
Publication Date:
October 18, 1990
Filing Date:
April 10, 1990
Export Citation:
Assignee:
MITSUI TOATSU CHEMICALS (JP)
International Classes:
B29C67/24; C08J5/00; C08K3/00; C08K5/00; C08L23/10; B29C71/02; (IPC1-7): C08J5/00
Foreign References:
| JPS62198440A | 1987-09-02 | |||
| JPS6028442A | 1985-02-13 | |||
| JPS58145747A | 1983-08-30 | |||
| JPS58104906A | 1983-06-22 |
Other References:
See also references of EP 0466926A4
Attorney, Agent or Firm:
Wakabayashi, Tadashi (16th Kowa Bldg. 9-20, Akasaka 1-chom, Minato-ku Tokyo 107, JP)
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